Wave Invariants for Non-degenerate Closed Geodesics

((Without abstract)) Submitted: January 1997, Revised version: May 1997, Final version: September 1997     

Book reviews

L.N. TREFETHEN and D. BAU, III,Numerical Linear Algebra,SIAM, Philadelphia, 1997G.-C. ROTA,Indiscrete Thoughts,Birkhäuser, Boston, 1997D.E. KEYES, A. SAMEH and V. VENKATAKRISHNAN, eds.Parallel Numerical Algorithms,Kluwer, Dordrecht, 1997A. KIRSCH,An Introduction to the Mathematical Theory of Inverse Problems,Springer, New York, 1996L.F. SHAMPINE, R.C. ALLEN, Jr. and S. PRUESS,Fundamentals of Numerical Computing,Wiley, New York, 1997C.W. UEBERHUBERNumerical Computation, 2 vols.Springer, Berlin, 1997W.G. McCALLUM et al.Multivariate Calculus,Wiley, New York, 1997ZHI-QUAN LUO, JONG-SHI PANG and D. RALPH,Mathematical Programs with Equilibrium Constraints,Cambridge University Press, Cambridge, 1996P.R. POPIVANOV and D.K. PALAGACHEV,The Degenerate Oblique Derivative Problem for Elliptic and Parabolic Equations,Akademie Verlag, Berlin, 1997     

Lipschitz maps and nets in Euclidean space

((Without abstract)) Submitted: April 1997, Final version: July 1997     

Anti-self-dual Equation on 4-manifolds with Degenerate Metric

((Without abstract)) Submitted: July 1997, Revised version: November 1997     

Complex projective surfaces and infinite groups

((Without abstract)) Submitted: March 1997, Final version: September 1997     

Austin identities

Received January 22, 1997; accepted in final form December 9, 1997.     

A Geometric Inequality with Applications to the Kakeya Problem in Three Dimensions

((Without abstract)) Submitted: May 1997, Revised version: August 1997     

Bounded and L2 harmonic forms on universal covers

((Without abstract)) Submitted: April 1997, Revision: October 1997     

Quasilinear parabolic equations with nonlinear flux boundary conditions and semigroups

((without abstract)). Received January 18, 1997 - Revised version received October 20, 1997     

$ \pi _1 $ of Symplectic Automorphism Groups and Invertibles in Quantum Homology Rings

((Without abstract)) Submitted: March 1996, revised: April 1997, final version: September 1997     

A QP-free constrained Newton-type method for variational inequality problems

Received January 5, 1997 / Revised version received November 19, 1997 Published online November 24, 1998     

Représentations p-adiques surconvergentes

Ohne Zusammenfassung Oblatum 19-V-1997 & 14-X-1997     

Regularity of Multivariate Refinable Functions

The regularity of a univariate compactly supported refinable function is known to be related to the spectral properties of an associated transfer operator. In the case of multivariate refinable functions with a general dilation matrix A , although factorization techniques, which are typically used in the univariate setting, are no longer applicable, we derive similar results that also depend on the spectral properties of A . September 30, 1996. Dates revised: December 1, 1996; February 14, 1997; August 1, 1997; November 11, 1997. Date accepted: November 14, 1997.     

Blossoming: A Geometrical Approach

A geometrical approach of a notion of blossom for piecewise smooth Chebyshev functions is developed by considering convenient intersections of osculating flats. A subblossoming principle allows us to obtain all the expected properties and leads to the notion of blossom for splines based on a given piecewise smooth Chebyshev function. January 7, 1997. Date revised: October 1, 1997. Date accepted: December 22, 1997.     

Recurrence Formula for Polynomials of Two Variables, Orthogonal with Respect to Rotation Invariant Measures

We give the recurrence formula satisfied by polynomials of two variables, orthogonal with respect to a rotation invariant measure. Moreover, we show that for polynomials satisfying such a recurrence formula, there exists an orthogonality measure which is rotation invariant. We also compute explicitly the recurrence coefficients for the disk polynomials. January 4, 1997. Date revised: October 15, 1997. Date accepted: October 21, 1997.     

On Kestenband–Ebert partitions

We study Kestenband–Ebert partitions from a group-theoretic point of view. © 1997 John Wiley & Sons, Inc. J Combin Designs 5: 367–375, 1997     

A direct product construction for 5-sparse triple systems

In this note, we present a direct product construction for 5-sparse triple systems. © 1997 John Wiley & Sons, Inc. J Combin Designs 5:443–447, 1997     

A Normal (0, 1)-Polytope None of Whose Regular Triangulations Is Unimodular

A normal (0,1) -polytope none of whose regular triangulations is unimodular is constructed. Received April 1, 1997, and in revised form June 20, 1997.     

Six mutually orthogonal Latin squares of order 48

A direct construction of six mutually orthogonal Latin squares of order 48 is given. © 1997 John Wiley & Sons, Inc. J Combin Designs 5:463–466, 1997     

Cyclic resolvability of cyclic Steiner 2-designs

In this article, direct and recursive constructions for a cyclically resolvable cyclic Steiner 2-design are given. © 1997 John Wiley & Sons, Inc. J Combin Designs 5: 177–187, 1997